Metroid Evolutionary Line
Metroid – Gamma Metroid – Omega Metroid
World: Metroid
Habitat: SR-388
Metroid
The Larva Pokémon
Type: Electric-Dragon
Ability: Levitate
Hidden Ability: N/A
Pokédex
Metroids were genetically engineered by the Chozo to exterminate a virus that plagues their planet. However, they began to attack other types of creatures and even the Chozo, forcing them to leave the planet. They are most commonly seen in their larval form, simply called Metroids, which look like semi-transparent flying jellyfishes. They feed by latching onto sources of energy and absorbing it into their bodies. They can do this with living things as well, latching onto their head and draining their life. The only known way to kill them is ice: freezing a Metroid and then shattering the ice will kill it. After SR-388 was abandoned, the Metroids began to develop their own life cycle.
Gamma Metroid
The Pupa Pokémon
Type: Electric-Dragon
Ability: Rough Skin
Hidden Ability: Static
Pokédex
When a Metroid approaches evolution, it grows an insect-like shell on top of it, which will become its body after evolving. It now has legs and crawls on the ground, and has a sharp horn. Its core can be seen from its underside. These Metroids lose the ability to drain your energy, but are growing to become more of a predator. They can now use their electric attacks as an attack, discharging electricity when they see prey. Their strategy is to paralyze the target so that they can kill them without much effort, then feed on their kill. There are very few Gamma Metroids in existence due to the mission to SR-388 to exterminate the Metroid race, but there are still some in existence.
Omega Metroid
The Predator Pokémon
Type: Electric-Dragon
Ability 1: Intimidate
Ability 2: Anger Point
Hidden Ability: Moxie
Pokédex
When a Gamma Metroid first evolves, it becomes a Zeta Metroid, a semi-evolution which will quickly grow into the massive Omega Metroid. This creature has a mouth full of sharp teeth, is bipedal, and has two huge claws. Its mouth is somewhat leech-like, although it has abandoned its days of energy-absorption for simply eating its prey. The only transparent part that remains is on its stomach. During its Zeta Metroid phase, it is capable of spitting a digestive enzyme at is opponents. The Omega Metroid retains this ability, but it rarely utilizes it. Certain Omega Metroids, under certain conditions, can become a legendary Queen Metroid, and only two queens have ever been documented.
Oak's Notes: Why dragon? For one, the Omega Metroid is vaguely draconic, and it has a major weakness to ice.